#include "sys.h"
#include "delay.h"
#include "usart.h"
// #include "rtc.h"
// #include "timer.h"
// #include "pwm.h"
int main(void)
{
    delay_ms(50);
    RCC_Configuration();
    NVIC_Configuration();
    USART1_Init();
    //********************模块初始化***********************
    delay_ms(5);
    printf("=========STM32 USART Printf =========\r\n");
    while (1)
    {
        //**************添加模块测试代码********************
    }
}
